Vertical cutting machine



June 10, `1947. J. HALLER ETAL VERTICAL CUTTING MACHINE `Filed. Sept. 2, 1942 5 Sheets-Sheet -l mmm @n 92. S

3 f Z/ van or Z so Gftornegs June 10, 1947.

J. HALLl-:R E1-AL VERTICAL CUTTING MACHINE Filed Sept. 2, 1942 5 Sheets-Sheet 2 Zou/S mmm 6mm.

5N mmm June 10, 1 94-7. J. HALLER ET AL VERTICAL CUTTING MACHINE Filed sept. 2

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June'lO, 1947. J. HALLr-:R ET AL VERTICAL CUTTING MACHINE Filed Sept. 2, 1942 5 Sheets-Sheet 4 @MGZ June l0, 1947. J. HALLER ET AL 2,422,095

VERTICAL CUTTING MACHINE i Filed sept. 2Q 1942 5 sheets-sheet 5 Patented June 10, 1947 l VERTICAL CUTTING MACHINE John Haller, Northville, and Louis V. Thompson, Detroit, Mich., assignors to Steel Tank Corporation, gan

Detroit, Mich., a corporation of Michi- Application-September 2, 1942, Serial No. 457,000

8 Claims.

The present invention relates to cutting and shaping machines and more particularly to a machine for operating on circular work pieces.A

The primary purpose of the invention is to provide a machine having a rotary work holder adapted to rotate a circular piece of work so that a turret head cutting element may be presented to the work to cut annular contours therein of true circular shape and size.

Another object of the invention is to provide a machine having a rotary work holder and a turret cutter head arranged so that the turret cutter head may be moved vertically or horizontally with respect to the work so that variousv annular shaped and configurations may be formed in the circular faces of the work piece with a minimum amount of labor and without requiring numerous calculations and 4measurements.

Another object of the invention is to provide a machine of the above mentioned -character having means for gaugingr and limiting the movement of the turret head cutter toward and away from the circular work piece to minimize the time and labor Afor adjustments and to increase the accuracy of such adjustments. f

Another object of the invention is to provide a cutting machine of the above mentioned charL acter in which the work piece is rotated on a rotary work table vand the cutting tool is pretool whereby work pieces of various circular sizes may be operated upon without eiecting the accuracy of the nished cut.

Another object of the invention is to provide manual control means for operating the fluid pressure turret head feeding means and manual sented thereto in direct alinement with the radius of the work holder whereby the cutting tool may be moved vertically or horizontally with respect to the work to produce cuts therein of various depths.

Another object of the invention is to provide a cutting machine particularly applicable to circular work pieces in which a rotaryl table is adapted to support the work in such a 'manner' as to insure a true cut and prevent wobble of the work holder and work piece.

Another'object of the invention is to provide a cutting machine of the above mentioned character in which the turret cutter head is moved toward and away from the work in vertical and horizontal directions. by meansof fluid pressure to facilitate quick and positive action of the cutter head and its movement into the path of the work.

Another object of the invention is to provide a cutting machine of the abovementioned character having a rotary work table which is driven by a suitable motor between which is interposed change speed gearing to enable the table to b e driven at'various speeds `relative to then cutting control means for the change speed gearing so that both manual control means may be manipulated at a common point, thereby obviating the necessity `of providing two or more operators thereby resulting in a reduction of labor and likewise, a reduction in time.

AAnother object of the invention is to provide a cutting machine of the above mentioned type in which the iiuid pressure feed means for the turret cutting head is supplied from a pump connected with the feed means and the manual controls therefor so that the pressure may be selectively applied to opposite ends of the feed cylinders to either move the turret head toward the work or away therefrom.

Other objects and advantages of the invention will become apparent during the course of the following description of the accompanying drawings, wherein Figure 1 is a top elevation of the cutting machine illustrating the complete assembly and showing the manner in which the rotary work tableis arranged relative to the turret head cutting tool. i

Figure 2 is a front elevational view of the cutting machine illustrating in detail the arrangementof the several instrumentalities and showing the turret head cutter presented to the work on the rotary work supporting table.

Figure 3 is a vertical cross sectional view taken on lines 3,-3 of Figure 2 looking in the direction of the arrows illustrating in detail the turret cutterrhead and the manner in which it is supported.

Figure 4 is a longitudinal cross sectional view taken lon line 4 4 of Figure 1 looking in the direction of the arrows illustrating the manner of supporting the Work table and the gearing for rotating the same.

Figure 5 is a vertical cross sectional view taken on lines 5 5 of 'Figure 2 looking in the direction of the arrows further illustrating the turret head supporting slide and the work table change speed gearing. K

Figure 6 isa horizontal cross sectional View taken on lines 6-6 of Figures 3 looking in the direction of the arrows illustrating the turret head cutter slide and the fluid pressure feeding 'means therefor.

Figure 7 isv an enlarged cross sectional view 3 taken on lines 1-1 of Figure 6 looking in the direction of the arrows showing thel connection between vertical fluid pressure feed means and the rotary turret cutter head.

Figure 8 is a vertical Vcross sectional view taken on line 8--8 of Figure 4 looking in the direction of the arrows illustrating in detail the worm drive for the rotary work supporting table and showing the casing for the worm gearing.

Figure 9 is a horizontal cross sectional View taken on line 9-9 of Figure 5 looking -in the direction of the arrows showing themanual control means for the change speedgearing illustrating the detent mechanism therefor in detail.

Figure l is a vertical cross sectional View 'eficaces roV taken on lines It-I of Figure 5 looking in thedirection of the arrows illustrating in detail the adjustable limit stop for limiting the movement of one of the turret head supporting slide members whereby'the Ycutter movement toward the work may be arrested when the desired cut has been produced. l e v Figure ll is a side elevational view of the change speed gearing illustrating a belt tightener applied to oneof the driving belts to prevent loose play in the drive. l

Figure nl2 is an enlarged fragmentary view of the turret cutter'head illus-trating the manner in which the cutters are held therein, and

Figure 13 is a diagonal sectional view taken on line |3I 3 of Figure 12 looking in the direction of the arrows further illustrating the manner in which the cutting tools are mounted in the rotary turret cutter head.

General `description The invention comprises a rotary work holder adapted to receive apiece of circular work to be grooved or cut on its internal or external surface to provide twoY or more annular grooves which are accurately finished with respect to depth and circular size. Also, the invention includes a turret tool carrier presented to the 'work holderin such a manner as to facilitate the feeding ofthe cutting tools into and kout of engagement Ywith they work so that annular cuts may be made of various depths, dependent .Y upon the predetermined adjustment of variable stop members employed for limiting the feeding, movement-of the turret cutter head. Further, the invention provides a variable speed drive for the work table to facilitate various speeds thereof as desired such as when making cuts of various depths. v n

The turret cutter head is mounted Aon vertical and horizontal guides so as torbe movable in a vertical direction as well as a horizontal direction and is adapted to be moved by means of hydraulic or fluid pressure means controlled from a come mon control point so that the operator y will be able tov control the machine more easily and may `guide `the cutter h'ead toward the work more rapidly. Fluid under pressure'is admitted to the fluid pressure turretL head moving means by a suitable pump driven-by a motor mounted-on the base of the machine so that a constant Y source of fluid under pressure will .be available at all times. rThe control means alternately connects the iluid fluidnpressure turret head movingimeans and likewise connects thereturn from the cylinders to the intake of the suppyA sourcesok that movement of the slides may be permitted independentlynor simultaneously.VA e Y .In the drawings, wherein for the purpo'seof 4 illustrating the invention and wherein like reference characters will be employed to designate like parts thereof, the reference character 5 will generally be employed to designate a rectangular machine base having a top wall 5 and a marginal depending rib 1 terminating in a flanged foot portion 8. The base 5 is adapted to rest upon a work table or other substantiallylevel support.

One corner of the base 5 is arcuately cut away as at 9 for the purpose of receiving a circular work table base, generally indicated by the reference character I0. The circular base is formed of a disk-like iioor portion II having an annulai'- ilange I2 terminating in an annular foot portion I3 likewise adapted to rest upon a table or other support which is substantially level and horizontal. The base I0 is adapted to be secured to the base 5 and to facilitate a connection therebetween, clamping lugs I4 and I5 are formed integral with the depending flange 1 at each end of the arcuately cut-away portion` 9. C Bolts or the like, as at I5 extend through the respective clamping lugs Ill and I5 and havey their threaded ends anchored in suitableopenings I1, likewise threaded, and formed on the clamping bosses I8 on the depending lflange I2 spacedA circumferentially to align with the clamping lugs I4 and I5.

The rotary work table I0 includes a cylindricalA e shaft rbearing 20 having an annular `harige 2I which is bolted to the base floor II by means of suitable machine screws 23 having their threaded Vends anchored in correspondingly threaded' openwithin the circular bearing 20 is a verticalspindle '29 locked against displacement by set screws 30 extending through' threaded openings 3l so that the innerpointed ends will engage and lock j the vertical spindle 29 against movement Mounted around 'the peripheral edgeof the kcircular base I0 and extending upwardly therefrom is a Vseries of supporting blocks 32 having spaced vertical supporting ribs 33 connected to the bottom by means of an integrally formed nange plate 34 Y'and at the top by a similarly formed plate 35. The blocks 33 are Vequidistantlyspa'ce'd circumferentially and the' lower flange Vplates 34 areadapted to be heldin place upon the base floor I l by means of suitable machine screws or bolts 36 extending through the ange plate so that the threaded'ends may be anchored in correspondingly formed openings in said circularrb'ase II. The upper flange plates supply to theopposite ends of the y35 of the blocks 32 are provided with a sector plate 31 bolted in place by "means'of suitable machine screws 3 8 which are countersunk vinthe plate 31 to provide a relatively flush top wall or face 39. u

Rotatably mounted upon thevertical spindle 25 is a work supporting table 40 having a central cylindrical bearing I formedintegral therewith' for receiving a'tapered adjustable-bearing wear take-up collar 42 in its bore as at 113. VThe upper end of the bore 113 is enlarged as at 13a for accommodating the flange 4211er said sleeve.

The vertical spindle 29 extends intothe ybearing sleeve Yllrland terminates a distance below the surface of the top Ywallof the work-table 40, A

'seriesof adjusting screws 42a are threadedk inv suitable circumferentially spaced openings in the flange 42h of the wear take-up collar to .raise or lower the same and thereby allow the adjustment of the table 40. Directly above the spindle bearing 4|, the bore 43 is further enlarged, as at 44 for receiving the marginal edge portion 45 of closure plate 48 heldin place by means of suitably spaced fastening bolts 41 countersunk so that the heads thereof will be flush with the work table surface 49. The lower portion or edge of the cylindrical bearing 4| is provided with a shim 48 fastened in place by circumferentially spaced pins 49 similar to the shims 21 on the upper edge of the cylindrical bearing 20. Interposed between the shims 21 and 48 is an annular member 50 formed of relatively hard metal so as to provide a thrust bearing so that the table 40 will seat properly and will be positioned in true horizontal relationship.

An annular upstanding flange 5| is formed integ-ral with the annular flange 25 so as to produce an annular cavity 52 adapted to receive a lubricant and thereby feed such lubricant to the faces upon opposite sides of the annular member 50. Depending from the bottom surface of the work table 40 is an annular rib 53 having a substantially flush seating surface 54 provided with a bearing ring 55 similar to the bearing ring 31 connecting the circumferentially spaced blocks 32. Machine screws 56 extend through the bearing ring 55 and are threaded in suitable openings formed in the seating surface 54 and the machine screws 56 have their heads countersunk so as to lie flush with the surface of the bearing ring 55. It is to be noted that the bearing ring 55 is of a greater width than the annular rib 53 so that a portion thereof will project therefrom directly beneath an anchoring ring 51 secured to the connecting ring 31 and spaced therefrom by annular arcuate spacing strips 58. Machine screws 59 extend through the anchoring ring 51, spacing ring 58 and connecting ring 31 so that their free ends may be threaded in openings 60 formed in the top plate 35 of each block 32.

The structure above described provides a rotary work table which may be rotated at various speeds and which will always travel parallel to the horizontal without deviating therefrom by reason of the accurately machined rings 50 and the accurately machined seating surface rings 31 and 55. Since there are no irregularities in the supporting ring, the table 40 may be adapted to support work of circular shape and relatively large diameter such as a ring R intended to'be used asa bearing ring member for relatively heavy and large structures. Secured around the edge of the work table 40 is an annular work supporting channel member Sil having its flanges 62 bolted in place by suitable machine screws 53. The channel member 6| is provided with a.

cutaway portion 64 for receiving an annular boss B formed on the work piece or ring R.

A series of work clamping plates 65 are positioned above the annular boss B of the work piece R and are provided with suitable openings 66 for receiving clamping bolts 61 which likewise extend through cireumferentially spaced openings 68 in the bracket and through correspondingly spaced openings O in the anular work piece boss B. Nuts or the like as at are threaded on the ends of the bolts 61 to securely clamp the work piece R in place and the bracket 6| is provided with a series of spaced openings for receiving a fulcrum pin 12 having a threaded portion upon which is received an adjusting nut 13 to limit the movement of thepin 12 in the opening of the bracket 6|. The upper end of the fulcrum is pointed, as at 14, and is adapted to be received in a, slight depression 15 formed in the under surface of the work clamping plates 65.

It is obvious that tightening of the nut 10 on the bolt 61 will cause the inner edge of the clamping plate 65 to tightly grip the work piece R as is clearly shown in Fig. 4. The upper surface of the work supporting bracket 6| may be in any desired configuration and if desired, a series of such brackets may be provided to accommodate various shapes vand forms of the work pieces R.

Depending from the under surface of the rotary work supporting table 40 is an annulus 1.6 formed integral with said under surface between the bearing collar 4| and annular marginal rib 53. Bolted to the lower edge of the annulus 15 is a worm wheel of ring formation 11 having a flange I8 bolted in place by means of suitable machine screws 19. The worm wheel 11 is provided with worm engaging teeth adapted to be coupled and meshed with a worm drive which will be presently fully described.

Mounted within the confines of the equi-distantly spaced circumferentially arranged blocks 32 is a gear housing 8| having an inclined floor 82 and end walls 83 and 84 connected by suitable side Walls 85. Flanges 86 are formed on the end walls 83 and 84 and are adapted to be secured to the base floor by means of suitable bolts 81.

A bearing boss 88 is formed in the end wall 83 and is provided with a bearing opening 89 in which is received the outer bearing ring 90 of a ball race 9|. The inner race member 92 is adapted to support a drive shaft 9.3 extending into the end wall 83 and through the opening 89 thereof so that the opposite reduced free end 94 may be provided with an inner race member 95 held in place by a collar 96 fastened in place on the shaft 94 by suitable fastening means. Antifriction balls 91 are received between the outer race member 98 and the inner race member 95 so that the free end 94 of the drive shaft 93 will likewise be anti-frictionally supported. The outer race member 9B is supported in a sleeve 69 mounted in an annular bearing boss |00 formed in the end wall 84 and the outer'race member 98 and bearing sleeve 99 are fastened and held in place within the bearing opening |0| of the Ibearing boss |00 by means of a closure plate |02 secured in position by means of circumferentially spaced bolts |03. The outer race member 98 is urged toward an inwardly extending flange |04 formed on the bearing sleeve 99 by means of a ring |05 which engages the outer race member 98 and is moved into contact thereto by engagement with the closure plate ||02 when the bolts |83 are tightened in place as is clearly shown in Fig. 8.

A retaining collar |06 is mounted on the shaft 93 and is held in place by means of a locking pin |81 extending therethrough and lockingly engaging with the shaft 93 and said retaining ring |06 prevents endwise movement of the shaft 93 by reason of the fact that it directly engages the inner race member 92. Y

Bolted to the annular bearing boss 88 is a sealing ring |08 positioned in place by suitable bolts or the like, as at |89,` and said sealing ring carries packing strips l0 which engage the shaft Y Keyed te Vthe shaft es within the housing'a'l isi a Worm-lll having its spiral teeth ||2 in mesh with the Worm Wheel 11 on the Work table 40 and it isl to-be noted that the gear housing 8| has one of its side walls-85 slotted as at ||3 for allowing the projection ofthe peripheral portion.

. keyv slot is formed in the worm in alinement with a similar key slot in the Vshaft 93 so that a locking gib l5 may be placed therein to rigidly lock the worm to the shaft 93. Suitable spacing collars IIS are mounted on opposite sides of the Worm and surround the shaft 93 so that the collars will engage the respective inner bearing race members 92 and 95 and prevent endwise movement of the Worm- It is obvious that rotation of the shaft 93 will likewise affect rota-k. tion of the Worm to drive the Work table 40 through the medium ofthe ring-shaped worm Wheel 11. If desired, the shaft 93 may be driven by an electric motor but it is contemplated to drive the same by means of a hydraulic type motor which may be regulated sov as to impart rotary speeds to the Work table 40 of various R. P. M.

The motor drive above mentioned is Wholly supported on the machine base 5 and as illustrated in Fig. 5, embodies a motor ||8 of a fluid turbine type having a base ||9. The base ||9 is supported by a sub-base |20 which is fastened to the oor by means of bolts or the like |2|. Y Likewise bolts |22 extend through the base ||9 and anchor the same to the base |20. The motor may be provided with an expansible uid inlet |23 and an exhaust |24 for the armature and exhaust of the driving iluid. A bearing |25 is formed in one Wall of the motor |8 through which projects the rotor shaft as at |26.

Also mounted on 'the base floor in direct alinement with the motor ||8 is a pair of spaced bearing supporting brackets |21 and |28 having their respective foot portions |29 and |30 bolted or otherwisesecured to'the base iioor by means of bolts |3|. The upper end of each of the bracketsl |21 and |28 is provided with a journal bearing |32 and. |33 in which iS rotatably sup- Y ported a drive shaft |34. One end of the drive shaft'is provided 'with a collar |35 forming a section for a exible coupling including an enlarged portion |36 having diametrically spaced grooves |31 in which is positioned a flexible member |38. The other section of the iiexible coupling is similarly formed and is-indicated, as at |39, and is likewise secured to the motor shaft |26. A diametrically disposed groove |40`is positioned at right angles to the groove |31Y `so that the flexible couplings |35 and |39 Will have limited relative motion.

Rotatably mounted upon the shaft |34 is a pair of spaced pulley hubs |4| and |42 having pulley rims |43 and |44 respectively, of different diameters. Each of the pulley hubs |4| and |42 is provided with an extension '|45 and |46 respectively upon Which is formed clutch teeth |41 and |48. Slidably mounted upon the shaft |34 and geared thereto is a clutch collar |49 having an annularly formed groove |50 and said clutch collar is provided on its radial faces with clutch teeth |5I and |52 adapted toalternately engage the respective clutch teeth |41 and |48 on the pulley 'collars |4| and |42. The clutch collar |43 is slidably carried to vthe shaft l'34by means Vof a'gib"l53`seated in a slot l'in the shaft yand like- 8 wise seated' in a'slotin the collar. The'pulleys` |43V and |44 are limited against 'endwise movement by means of collars |54 and |55 securedto the shaft |34 soas to engage the outer wall of the respective hubs |4| and |42. Likewise retaining collars |55 and |51 are positioned on the shaftk |34 and are-engaged by the opposite ends-of the key |53 to prevent movement of the pulleys |43 and |44.

Mounted in spaced relation and. parallel to the shaft |34 is a driving shaft |58 which is'similarly supported by bearing brackets |59 and |60 at its opposite ends. Bearing caps ISI and |62 vare mounted ion top of the brackets |59 and V|60 and said brackets andlbearing caps may be-bolted together in any suitable. position. -Rotatably mounted on the shaft' |58 is a pair of belt pulleys |33 and |34, the respective hubs .of which, as at and |55, being provided With clutch'teeth |61 and |68 for engagingrthe clutch vteethiii and |15 formed on a sliding collar |1| which is secured to the shaft |58 by means. of a suitablekey similar to the key |53 shown in Fig. 5. The clutch collar |1| is provided with anannular groove |12 similar to the groove |50 in the clutch collar |49.V The end of the shaft |58 isprovided With a flexible coupling |13 Which is'connected to the shaft 93 extending into the gear housing or casing 9|, Each of the pulleys |43, |44, |63 and |64 is provided With a series of V-shaped grooves for receiving Ya series of driving belts and as shown in Fig. l, thepulleys |43 and |63 are coupled by a series of V-shaped driving belts 4|15 While the pulleys |44 and |64 are coupled by a series of V-shaped driving belts |15. The driving belts '|15 and |16 are .trained over their respective pulleys whereupon rotation of the shaft |25 of the motor H3 may be imparted to the shaft |58 through the shaft |34 so that the table 49 may be rotated at various speeds. In order tov facilitate the variable .speed drive a rod |11 extends between the Aclutch collars |49 and |1| and is provided on its opposite ends With yokes |18` and |19 rotatably received in the grooves |50 and |12 of the respective clutch collars |49 and |1|. An operating rod |80 is connected to the intermediater portion of the rod |11 and said Y |82 as 'at |85 and has one of its ends connected tothe'operatin'g rod |80 by means of a pivot pinA 13S.V The opposite end ofV the bell crank |84 is provided with a pair of spaced arms |31 carrying a pivot pin |38 to which is pivoted a latch lever |39 so that the latched Vportion thereof, as at |95 may engage Within a seriesfof Y spaced notchesiiii in a face vplate |92. A-coil spring |530, is provided and has one of its ends engaging the handle |8| While the opposite end engages the Vhandle portion-0f the latch lever it@ .to normally urge the latch |90 into the notches |9| in the face plate |`92.` As shown in Figs. 5 and l9; the bracket |82 and face plate Y|92 are'formed integral and is secured to a lcontrol panell vmounted on Ytl'le'irontwvall |94 of vthe housing |83. VIt Will thusbe obvious that vertical locking movement of the handle |8| jon the pivot pin |85Will reciprocate the rodr and causethe clutch collars |49and 11| to be shifted alternately intoengagement with the clutch teeth 141-448 AVand 101|`58 respectively, thereby couplin'gt'he shafts |34 and |58throug'h 9. said V-shaped drive pulley belts or |16. Since the pulleys |43 and |44 are of different sizes and likewise, the pulleys |63 and |64 are of different sizes, two different speeds are provided for driving the shaft |56 on the table |40. The housing |83 is mounted upon the base floor secured thereto by bolts or the like and said housing is provided with an opening in its rear wall |95 as at |96 by the extension of the shaft |34 whereby the motor H8 will be housed by the casing |03 to prevent the entrance of dirt or other foreign matter. The top wall of the casing |83 is substantially horizontal, as at |91, for a portion of its width and is provided with an arcuately curved portion |98 connecting the top portion |91 with the front wall |94 by means of an offset portion |99 providing a platform surface 200. The housing |63 extends substantially the full length of the rectangular base 5 and said housing is bolted thereto by means of suitable bolts or the like, as at Mounted on the top Wall 61 of the housing |03 is a casting 202 having formed integral with one edge thereof, as shown in Fig. 5, an oifset portion 203. A horizontal slide guide plate extends perpendicularly from the offset portion 203 and is generally indicated by the reference character 204. Bolts or the like, as at 205, extend through the casting 202 so as to anchor the same securely to the top wall |91 of the housing |83. Reenforcing webs 206 connect the casting 202 to the vertical slide guide plate 204 and said reenforcing webs 206 are equi-distantly spaced and formed integral with the casting 202 and Vertical slide guide plate 204. As shown in Fig. 1, the end reenforcing webs 206 extend upwardly from the intermediate portion as well as the end edges of the casting 202 so that the vertical slide guide plate 204 will be reenforced throughout its length and not become warped and out of alinernent.

Slidably mounted upon the slide guide plate 204 is a horizontal slide 201 having its top and bottom edges provided with rearwardly extending flanges 208 adapted to engage the top and bottom edges of the slide guide plate 204. Retaining strips 209 are bolted to the flanges 208 by means of bolts or the like, as at 2|0, and said retaining strips`v slidably engage with the cutaway portions 2|| formed at the top and bottorn of the slide guide plate 204 whereby the slide 201 may be guided on the slide guide plate and the retaining strips 209 may overlie the'cutaway portions 2| l. Formed integral with the slide 201 and adjacent each end thereof is a pair of bosses 2|2 and 2|3 and bolted to said bosses is a cylinder 2|4 having oppositely extending lugs 2|5 and 2| 6 at each end thereof. Bolts 2| 1 extend through the lugs 2|5 and 2 |6 and have their inner ends threaded in correspondingly-threaded openings formed in the bosses 2|2 and 2|3. A piston 220 is mounted for reciprocation within the cylinder 2|4 and is provided with a'piston rod 22| extending through a packing 222 formed integral with one end of the wall 223 of the cyln inder 2|4. The opposite end of the piston rod 22| is securely fastened to an extension 224 formed integral with the perpendicular slide guide plate 204 and said extension 224 is provided with a bracket 225 secured in place by means of bolts or the like, as at 226. The bracket 225 is provided with a bore 221 through which the threaded end 228 of the piston rod 22| extends so that nuts 229 and 230 may be threaded on the end of the piston rod to clampingly engage 'the bracket 225 and thereby securethe pistonv rod 22| again'stmovement.

Formedintegral with one end of the slidel 201 is ari-enlarged head 23| having'a central channelway 232 and communicatingnwith lthe central vchannelway is a longitudinal slot 23 3- formed directly opposite the slide plate 204. The slot 233 is adapted to slidably support a vertically Y-sliding head 234having a reduced portion-235 vof substantially the same width as the slot 233 so as tobe received therein fand guided thereby. The vertically movingslide head 234. is provided with a pivot pin-236 upon which is mounted a rotary turret head231- adapted to support a series ofcutting tools laround the peripheral portion thereof so that said cutting tools maybe brought into engagement with the work R by simply shifting the head'231- The pivot pin 236 .extends through acentral opening 238 in the turret head 231 and said pinis threaded-on its free end as at 239 forreceiving a pair ofy lock Anuts 240 adapted to clampingly secure the head 231 to the 'slide 234. The verticallyA moving slide y234 is provided with a series of-equi-distantlyspaced pins v24| which project beyond the outer surfaceA of the vertically moving slide 234 for being received in centrally spaced openings 242 formed on the turret tool carrier head 231. The pins 24| are Vsecured in position by means of` set screws or the like as at 243 to prevent Vtheirdisplacement when the turret head 231yk isV being changed relative to the vertically moving-slide 234. As shown in Figs. 12 and 13, the -turrethead .-231 is cut away as at 245 for receiving the cutting tools 246 and said cutting tools are backedfup by a backingl plate 241 secured in place by means of bolts 248 the heads of whichfare flush with the exposed wall of the backing plate so that the cutting tools 246 may lie flush therewith. An anchor plate 249 is bolted over the cut-away portions 245 and is secured in place by machine screws 250 or the like. Tool engaging screws 25| extend 'through the plate 249 and are threaded therein so that they may be forced into engagement with ,the tools 246 to securely lock the tools -intofposition As shown in Fig. 12, spaces 252n1ay be provided between adjacent tools by leaving the metal remain between the cut-out portions 245 andif desired, the tools 246 may be spaced by spacing blocks inserted therebetween. The turret head 231 is provided with projections 253-2544255 and 256 which are increased in size andare stepped in such a manneras to facilitate the positioning of thetools 246 at various angles with respect to the radius of the turret head.. It is to be noted that the sliding head 234 is dovetailed and likewise, the guide slot 233 is similarly shaped so as to prevent the displacement at the vertical moving slide 234 as is best-shown -in Fig.6. A v Extending .along one edge of the dove-tailed slidepart 235 is a wear compensating gib 255:1 adapted to be urged into engagement. with the dove-tailed slide part 235 by means of a screw or the like as at 256e. i l Secured to the rear wallof the dove-tailed slide part 235 is an anchor block 251 bolted or otherwise securedlin place by means of relatively long bolts 258 extending through openings therein-and having the 'threaded ends received in correspondingly threaded openings 259 in the rear wally of the dove-tailed slide part! 235. The anchoring block 251 is lprovided with a transverse bore 260 for receiving the lower end of a piston rod v26| which is threaded asat 262 so that nuts 263 may 264 is a shim block 265 which has both of its opposed faces machined so as to extend in parallel planes. The casting 264 is bolted to the enlarged head 23| by means of anchor bolts 266 extending therethrough so that the lower threaded ends are received in the shim block 265. The

shim block 265 is likewise bolted tothe enlarged head 23| by means of the bolts 261 extending l therethrough and anchored in correspondingly threaded openings in the top wall of the enlarged block 23|. The casting 264'is provided with a central threaded opening 268 forreceiving the lower threaded end of a cylinder 210 which is likewise externally screw-threaded as at 21| for being coupled to the casting 264. The casting 264 is provided with a bottom [wall 212 having a central opening surrounded by an annular boss 213 for receiving a gland nut 214 so that the piston rod 26| may project through the wall 212 and through the annular boss 213 and be sealed against uid passage by means of a `packing or sealing ring 215. The upper end of the piston rod 26| is connected to a piston 216 reciprocably mounted within the cylinder-210V so that when fluid is admitted runder pressure to opposite sides of the piston the dove-tailed slide 234 will likewise be reciprocated to move the turret head 231 toward and away from the work R.

The upper end of the cylinder 218 is internally screw-threaded as at 211.for receiving a closure plug or head 218 which is likewise threaded as at 219 and said closure plug or head 218 is provided with a projection 280`having a bore 28| communieating with one side of the piston 216. The casting 264 is provided with a bore 282 likewise communicating with the opposite side of the piston 216.

It is to be noted that the cylinder 2I4 is provided at one end with a head 283 having a fluid passage port 284 while the head 223 is likewise provided with a similar fluid passage port 285. Means is provided for supplying uid under pressure to the respective cylinders 2M and 219 and said means includes a pumping apparatus mounted on abase 286 secured to the floor I of the base 5. Y Y Y Mounted at one end of the base 286 is a. gear type pump 281 having a pulley 288 connected to its rotor shaft and said pulley 288 is adapted to be driven by means of an electric motor 289 having a pulley 290 secured to its armature shaft 29|. A drive belt 292 is trained over the pulleys 288 and 290 to cause rotation of the pump rotor. The base 286 is hollow and provides a reservoir for liquid material such as oil or the like and c onnected with said reservoir is a pipe 293 which extends downwardly therein by means of arr elbow 294. The opposite side of the elbow 294 is connected by an elbow tting 295 and gland nut 293:1 tothe inlet of the pump 281 so that said fluid will be exhausted from the pump through the outlet 296 to a manifold 291 for supplying fluid to the gpiosite endsrof the respective cylinders 2 I4 and The uid under pressure yfrom the manifold 291 is supplied to a pair of control valves 298 and 299 bythe respective pipe connections 300 and 39|. The valves 298 and 299 are mounted in the control panel |93 in the front wall |94 of the housing |83 and each of the .control valves is provided with a handle and indicating pointer 302 and 303 respectively so that the relative positions of the valves may be determined by registering the handle pointers 392v and 393 with graduated dials 391|y and 305 respectively. The valves 298 and 299 may be of four-way type and each valve is provided with a pipe 386 and 391 for `connecting the valve to the reservoir 286. The valve 298 is adapted to control admission of theuid under pressure to opposite sides of the piston 220 mounted in the cylinder 2I4 and this is accomplished by providing ilexible hose connections 308 and 399 adapted to communicate with the ports 284 and 285 respectively at each end of the .cylinder 2M. The'pipes 393 and 309 are connected to supply pipes 3 i Il and 3| .l connecting the valve 298 so that when the valve is turned in one of its positions, iiuid will be supplied from the manifold 291 Vthrough the valve and to one end of the cylinder 2|4 whereupon the opposite connection will be in communication with the valve 293 with the reservoir 286 through the return pipe 396. The other valve 299 operates in substantially the same manner and is adapted to control iiuid under pressure to opposite sides oi the piston 216 mounted in the cylinder 210. To accomplish this, flexible pipe connections 3 2 and 3I3 are connected to oppositeien'ds lof the cylinder in communicationiwith the respective ports 28| and 282 and said flexible feed pipes SI2v and 3|3 are connected to parallel supply pipes 3 I 4 and 3 |75 respectively. The opposite ends of the supply pipes 3|4and 3`|5 arevconnected to pipes 3|6 and 3 I 1 connecting the valve 299 so that manipulation of the valve 299 by turning the pointer handle 393 will alternately supply fluid under pressure to opposite sides of the piston 216 through one of the pipes 3|2 or 3|3 while theopposite pipe will con-v nect through the valve 299 to the reservoir 286 by the return pipe 301.

rIt will be obvious that well known types of valves may be employed for the valves 298 and 299 and, therefore, the specific valve construction has not been shown although it is to be understood that whenfone of the valvesris turnedrto communicate the fluid pressure from the exhaustside of the pump 281 to one side o1 one of the cylinders the oppositeside of the cylinder will be in communication with the reservoir 266 to .allow the bleeding of the piston. The pipes 3H), 3M and 3I5 are supported inv suitable .bracket yplates SH3 secured tothe intermediate reenforcing webs 296 onthe casting 292 so that the pipes 3I0, 3Ill and 3 5 will remain stationary while the flexible pipes 308, 309,312 and 3I3 will'allow sliding movement of the slide 291 with respect to the slide plate 284. The reservoir 286 may be provided with a `filler spout 320 having a iiller cap 32| for the purpose of replenishing the fluid, such as oil, in the reservoiras the supply is diminished.

It is to be noted that the manipulation of the valve 298 may control the sliding movement of the slide 201 in a horizontal direction while Vthe manipulation of the valve 299 may control the movement of the sliding head 234 in a vertical direction. In this manner the turret head231 maybe moved toward and away from'the *workV in a vertical direction as well as a horizontal direction.

Means is provided forlimiting the vertical and horizontal movement and the means for-limiting the horizontal movement of the turret head 231 and the slide 201 includes a bracket portion 322 formed integral withthe slide reenforced by Aa web portion 323 interconnecting the bracket and slide 201.

Secured to the bracket 322 is a bearing bracket 324 the base of which is bolted to the bracket 322 by means of suitable bolts 325. The bearing bracket 324 is provided with a bearing boss 326 for rotatably receiving a shaft 321 upon the opposite ends of which are keyed cylinders 328 and 329. The cylinders 328 and 329 are keyed to the shaft 321 by means of -keys 338 and 33| respectively so that the cylinders will rotate or revolve in unison.

Threaded on each of the ends of the shaft 321 is a pair of nuts 332 and if desired, washers 334 may be interposed between the nuts 332 and cylinders 328 and 329 to assist in locking the nuts against displacement.

The cylinder 329 is provided with a series of equi-distantly circularly spaced depressions 335 for receiving a spring-pressed plunger 333 slidably mounted in a recess 331. The plunger 335 is urged into engagement with one of the depressions 335 by means of a coil spring 338 seated within the opening or cavity 331,

Each of the cylinders 328 and 339 is provided with arcuately extending circularly arranged threaded bores 339 and 343 respectively which are circularly spaced in alinement with the depressions 335 and plunger 335 so that the cylinders will come to rest and will be frictionally held so that a pair of axially alined threaded openings 339 and 340 will be presented to suitable stop members.

Adjustably mounted in the circularly spaced threaded openings 339 and 349 is a series of screw-threaded pins 34| and 342 adapted to be threaded in and out of the axial screw-threaded openings 339 and 349 to increase or decrease the over-all length between the ends thereof when a certain pair are brought into alinement with the stop members 343 and 344 asshown in Fig; 2. The stop members 343 and 344 constitute pins supported by brackets 345 and 345 formed integral with the shelfy 280 of the housing |83. 'I'he pins 343 and 344 are inserted in suitable openings in, the stop brackets 345 and 345 respectively. It is to be noted that the alined axially arranged stop pins 34| and 342 are so carried by the cylinders 328 and 329 that a pair of stop pins may be brought into registry and alinement between the stop pins 343 and 344 so that the slide 281 will come to rest and will be limited against further movement when either of the stop pins engages either yof the stop members 343 and 344.- The stop pins 34! and 342 are adapted to be adjustably held in position by means of knurled nuts 348 and 349 respectively threaded thereon to facilitate the locking of the screw-threaded'stop pins after an adjustment has been made by suitable calipering instruments. It is intended to adjust the screw-threaded stop pins 34| and 342 a predetermined amount so that the distance between the outer ends of the stop screws will be of predetermined value thereby merely making it necessary to rotate the cylinders 328 and 329 to bring any desired pair of stop pins into registry with the stop members 343 and 344.

Each of the cylinders 328 and 329 is provided with a pair of cut-out notches 359 which are alined so that the notches may be brought into registry with the stop members 343 and 344 thereby allowing the slide 291 to move its full length due to the fact that the stop pins and cylinders have been removed from the path of the stop members 343 and 344.

A somewhat similar device is provided for limiting the vertical movement of the slide 234 and includes a bracket arm 35| having its base por.. tion 352 bolted to the slide by means of suitable bolts 353. The free end of the bracket arm 35| is formed with a bearing boss 354 for the reception of a stub shaft 355 similar to the shaft 321. Keyed to each end of the shaft 355 is a cylinder 355 and 351 having a series of axially alined screw-threaded bores similar to the bores 339 and 340 shown in Fig. 10. Threaded in each of the bores in the cylinder 356 and 351 are suitable stop pins 358 and 359 capable of being adjusted in the same manner as the stop pins 34| and 342. Likewise the stop pins 358 and 359 are provided with knurled lock nuts 368 and 35| to lock the stop pins 358 and 359 in an adjusted predetermined position. Each oi' the cylinders 355 and 351 is cut away as at 362 so that the stop means may be eliminated when desiredV during certain work. v

Mounted on the sliding head 23| on opposite sides and in the path of a pair of alined stop pins 358 and 359 is a pair of brackets 363 and 334 fastened in place by suitable machine screws and each of the brackets is provided with a stop arm 365 and 368 respectively providing stop members adapted to be engaged by alined pairs of stop pins 35B and 359 when the slide 234 moves in a vertical direction. A spring-pressed detent similar to the plunger 336 is provided in the bearing boss 354 for being received in suitable depressions circularly and equi-distantly spaced in one of the cylinders 356 or 351.

As shown in Fig. 1, the belts |15 and |16 are provided with belt tightening means, generally indicated as at 310 and 31|. Both of the belt tighteners are identical and so it will only be necessary to describe one in detail. Y

By reference to Fig. 1l, it will be noted that a bracket 3l2 has its base 313 secured tc the machine base 5 and tothe floor 6 thereof by means of suitable bolts 314. rIhe bracket 312 is channel-shaped and is provided at the top portion with a transverse shaft 315 connecting the iianges of the channel and pivotally mounted on said shaft 315 is a pair of arcuately spaced roller supporting arms 316 connected at the free end by means of a transverse anchor rod 311 so that a roller 318 may be supported on a roller pin 319 likewise secured between the free ends of ie arcuately curved arms 315. The roller 318 is adapted to engage the belts |15 and |19 and may be urged toward said belt by means of a screw adjustment 388 loosely mounted in a con# necting bar 38| so that the threaded end will be received in a screw threaded opening in a transverse connecting bar 382 connecting the opposite ends of the larcuately curved arms 316. rlhe arcuately curved arms 316 are adapted to partially encircle the pulleys |43 and |44 so that the rollerV will engage the respective belts |15 and l'i. It is obvious that tightening of the bolt 33t by the application of a wrench thereto will aifect the adjustment in relative position of the roller with respect to its operative belt.

in operation the work piece R is bolted in position upon the rotary work table and the motor H8 is started to `drive the shaft and work table. By manipulating the hand lever |89 to clutch or unclutch the respective drive pulleys the proper speed may be obtained so that the rotatable table will be rotated at the desired speed. The turret head may then be adjusted to position a groove in the cutters with respect to the work so that operation of the valve pointer levers 392 and 303 may control the movement of the turret head toward and away from'Y the work in a vertical and horizontal direction.

in operating upona piece of work as shown inthe drawing, the groupv of cutting tools may be lowered by manipulating the valve lever 3G13 to the proper depth determined by the stop pins Staand 3%59 whereuponthe other valve lever work piece under and in engagement with a series of cutting tools Vand it is obvious that various contours maybe cut and provided for by simply changing the groupingor arrangement of the cutting tools 346. Y

t is to be understood that the form of the invention herewith shown and described is toVY be taken as a preferred embodiment of the same and that various changes in the shape, size, and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

What we claim is: l

1. A vertical cutting machine, comprising'a rectangular hase having a cut-away corner, a round base mounted in the cut-away corner, a rotary work table mounted on the round base adapted to support a piece of work for circular cutting, means for rotating the work table, a cutting means, said rectangular base including a ner being cut away in an arc of a circle, a round base mounted in the cut-away corner nesting with and secured in the arcuate cut-away corner,

a rotary Work table mounted on the round base adapted to support a piece of work for circular cutting, means for rotating the work table, a cutting means, said rectangular base including a vertical portion adjacent said cut-away corner,

' and means on said portion for supporting said vertical portion adjacent said cut away corner,

and means on saidl portion for supporting said cutting means at said corner and over said table in cutting relation to a work piece mounted thereon, whereby clearance is provided adjacent the juncture of said rectangular and round bases for an operator in the visible inspection of the cutting operation in the vicinity of said corner;

2. A vertical cutting machine, comprising a rectangular base having a cut-away corner, a round base mounted in the cut-aWay corner, a rotary work table mountedpn the round base adapted to support a piece of work for circular cutting, means kfor rotating the work table, a cutting means, said rectangular base including a vertical portion adjacent said cut away corner, and means on said portion for supporting said cutting means at said corner and over said table in cutting relation to a work piece mounted thereon, and control means for the afore-mentioned means located adjacent the juncture of said rectangular and round bases for an operan tor in the visible'inspection ofthe cutting operation in the vicinity of said corner.

3.` A vertical cutting machine comprising a recitangular base having a cut-away corner, a round base mounted in the cut-away corner and secured therein around the circular edge of said base, a rotary work table mounted on the round base adapted to support a piece of work for circular cutting, means for rotating the work table, a cutting means, said rectangular base including a vertical portion adjacent said cut-away corner, and means onrsaid portion for supportingvsaid cutting means at said corner `and over said table in cutting relation to a work piece mounted thereon, whereby clearanceis provided adjacent the juncture of saidrectangular and round bases for an operator in the visible inspection of the cutting operation in the vicinity of said corner.

4. A vertical cutting machine comprising a rectangular base havinga cut-away corner, said corcutting means at said corner and over said table in cutting relation to a Work piece mounted thereon, whereby clearance is provided adjacent the juncture of said rectangular and round bases for an operator in the visible inspection of the cutting operation in the vicinity of said corner. Y

5. A vertical cutting machine comprising a rectangular base having a cut-away cornena round base mounted in the cut-away corner, a rotary Work table mounted on the round base adapted to support a circular piece of Work for circular cutting, means for rotating the work table, a cut-.- ting means, said rectangular base including a vertical portion adjacent said cut-away corner, and means on said portion for supportingsaid cutting means at said corner and over said table in cutting relation to a work piece mounted thereon, whereby clearance is provided adjacent the juncture of said rectangular and round bases for an operator in the visible inspectionrof the cutting operation in the vicinity of said corner.

6. Al vertical cutting machine comprising a rectangular base having a cut-away corner, said corner being cut away in an arc of a circle, a round base mounted in the cut away corner nesting with and secured in the arcuate cut-away corner, a rotary Work table mounted on the round base adapted to support a piece of work for circular cutting, means for rotating the Work table, a cutting means, said rectangular base including a Vertical portion adjacent said cut-away corner, means on saidportion for supporting said cutting means at said corner and over said table in cutting relation to a work piece rmounted thereon, and control means for the aforementioned means located adjacent the juncture ofV saidrectangular and round bases for an operator in the visible inspection of the cutting operation in the vicinity of said corner. i f

7. A vertical cutting machine comprising a rectangular base having a cut-away corner, a round base mounted in the cut-away corner and secured therein around the circular Vedge of said basava rotary work table mounted on the round base adapted to support a piece of work for circular cutting, means for rotating the work table, a cutting means, said rectangular base including a vertical portion adjacent said cut away corner, means on said portion for supporting said cutting means at said corner and over said tablel in cut` base mounted in the cut-away corner, a rotaryV Work tablemounted on the round base adapted to support a circular piece of work for circular cutting, means for rotating the Work table, a cutting means, said rectangular base including a vertical portion adjacent saidY cut-away corner, means on said portion for supporting said cutting means at said corner and over said table in cutting relation to a work piece mounted thereon, and control means for the afore-mentioned means adjacent the juncture of said rectangular and round bases for an operator in the visible inspection of the cutting operation in the Vicinity of said corner.

JOHN HALLER.

LOUIS V.y THOMPSON.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Name Date Bullard Oct. 1, 1901 Number Number Number 15 55,991 336,869 

